71d4b7366a4d51a645dd3be91e07ba7a7fdab88b34dfb245a8168118209988e3

Analysis

user interaction
yes
max time kernel
449s
max time network
318s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
15/10/2026, 22:19

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General

Target
Firefox Installer.exe
Size 496KB
Sample261015-18va8aes9m
SHA256 71d4b7366a4d51a645dd3be91e07ba7a7fdab88b34dfb245a8168118209988e3
MD5 995590b84b3124243b85ad4bc5d4c37e
SHA1 d2613a264b195be55e7ae6060833c64fabf824ad
SHA512 c20907b672d134d3bf56454bd8de253d3c61d9c372d3fec0f1071beebac152921d05549d2db7bed6f0c4b1b82ae1c94a1c0d47fb0e2a1291ca3bc84babc3983e
SSDEEP 12288:NMROxTfOnMmXwuqrz+zgLx9lhdC8IXgmP4qN/u/I7GZ:iIxinvXe4+nhdC8Al7Na
TLSH
T141B4233B0F3904CBF283B935DC8E81A77BF86F0A06A087F399283555721F5572A56726
MD5 SHA1 SHA512 SSDEEP TLSH

Score

5^/10

discovery spyware stealer upx

Malware Config

Signatures

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4744-0-0x0000000000400000-0x0000000000446000-memory.dmp	upx
behavioral2/memory/4744-87-0x0000000000400000-0x0000000000446000-memory.dmp	upx

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Mozilla Firefox\nsc6EB0.tmp	setup-stub.exe
File opened for modification	C:\Program Files\Mozilla Firefox\nsc6EB1.tmp	setup-stub.exe
File opened for modification	C:\Program Files\Mozilla Firefox\nsc6EB0.tmp\	setup-stub.exe
File opened for modification	C:\Program Files\Mozilla Firefox\nsc6EB2.tmp	setup-stub.exe
File opened for modification	C:\Program Files\Mozilla Firefox\nsc6EB3.tmp	setup-stub.exe
File opened for modification	C:\Program Files\Mozilla Firefox\nsc6EB2.tmp\	setup-stub.exe

Executes dropped EXE 1 IoCs

pid	Process
256	setup-stub.exe

Loads dropped DLL 7 IoCs

pid	Process
256	setup-stub.exe
256	setup-stub.exe
256	setup-stub.exe
256	setup-stub.exe
256	setup-stub.exe
256	setup-stub.exe
256	setup-stub.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	setup-stub.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	setup-stub.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	setup-stub.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Firefox Installer.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
256	setup-stub.exe
256	setup-stub.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 4744 wrote to memory of 256	4744	Firefox Installer.exe	90

C:\Users\Admin\AppData\Local\Temp\Firefox Installer.exe
"C:\Users\Admin\AppData\Local\Temp\Firefox Installer.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4744
- C:\Users\Admin\AppData\Local\Temp\7zS8823C659\setup-stub.exe
  .\setup-stub.exe
  2⤵
  - Drops file in Program Files directory
  - Executes dropped EXE
  - Loads dropped DLL
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:256

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:4092

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

setup-stub.exe

Path C:\Users\Admin\AppData\Local\Temp\7zS8823C659\setup-stub.exe
Size 852KB
SHA256 351fa954c4a2dec6122ad413a7661da4c26689d883ef4839a581bcbdfc9066d8
MD5 1ba0707258936e2a5dca10e13472b9a8
SHA1 9c1b5b05469bf059a78625d84bd23ede27ef5406
SHA512 de8a0b480cf695cbe6ab08ce93a406fc2c7aa1631819729297be162b8a72cd9e5d7798d0ad9261defe1d9f79b037e321952161356d1db80925561c0ddc328d71
SSDEEP 12288:0TjgAuuv7OzhuW/sTIdvPi0fWLISoieVKw6kcUelxbdUnhasLki:0TDxv7pcANoiprZddsAi
TLSH
T136058D22F3C1DA62D76F053478BCEE72173ABDC06F90859732167A5C6E30B504E6926E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

CityHash.dll

Path C:\Users\Admin\AppData\Local\Temp\nsm6E51.tmp\CityHash.dll
Size 53KB
SHA256 c299a0a71bf57eb241868158b4fcfe839d15d5ba607e1bdc5499fdf67b334a14
MD5 2021acc65fa998daa98131e20c4605be
SHA1 2e8407cfe3b1a9d839ea391cfc423e8df8d8a390
SHA512 cb96d3547bab778cbe94076be6765ed2ae07e183e4888d6c380f240b8c6708662a3b2b6b2294e38c48bc91bf2cc5fc7cfcd3afe63775151ba2fe34b06ce38948
SSDEEP 768:jfXngOuwVTROMOZbPg9ao/wxsfJM3JuNUgo3BDGFo+EA3:j/hPVTRBO9NJYMMnomoy3
TLSH
T1C8439D31759189B3D59AC97230E49F2F7E7E7A011BE488D35B7984001F60BE1B27E35A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

InetBgDL.dll

Path C:\Users\Admin\AppData\Local\Temp\nsm6E51.tmp\InetBgDL.dll
Size 95KB
SHA256 3921dec014fadd1de7f3a36606ac95882a17cb96df38a5424e58531a169f825b
MD5 af9e2d138cf17b8ff4d4b8df7fddaefa
SHA1 539afa302bc5cae7022896048cb7a0f3f2ab6907
SHA512 631ad8bbb9eea42b230f2729714874c921677c4be91ac0b35ab9e7751613045eb249f8a0dd1d5ce06bf2cd544507795836dcbf42be79f01a71333570ea27c840
SSDEEP 1536:E5Hdo/N8Hu9M3hd2OR4svcXn9vh1cWir+VrdukX+ePTGnutmfsbLj7lkjDnblYWA:E+Y0M3hd2ORk9vXyk3Piuz37lIDblLA
TLSH
T156A37C52B5D0D831E9BE193E2874DA649F3E7A11CF909CEB235406694F302C1DF74AAB
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsm6E51.tmp\System.dll
Size 22KB
SHA256 b711c4f17690421c9dc8ddb9ed5a9ddc539b3a28f11e19c851e25dcfc7701c04
MD5 b361682fa5e6a1906e754cfa08aa8d90
SHA1 c6701aee0c866565de1b7c1f81fd88da56b395d3
SHA512 2778f91c9bcf83277d26c71118a1ccb0fb3ce50e89729f14f4915bc65dd48503a77b1e5118ce774dea72f5ce3cc8681eb9ca3c55cf90e9f61a177101ba192ae9
SSDEEP 384:78+Qlt70Fj/lQRY/9VjjgLZvDGFtart8E9VFK4ietffvtlh:7SqFjm6YL1DGFo+EA6tlh
TLSH
T153A27C62C7605CF1FD629D3430E4AE2B6F79BB496B9084E397AAC0405B817C365FD287
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

UAC.dll

Path C:\Users\Admin\AppData\Local\Temp\nsm6E51.tmp\UAC.dll
Size 28KB
SHA256 ec6a56d981892bf251df1439bea425a5f6c7e1c7312d44bedd5e2957f270338c
MD5 d23b256e9c12fe37d984bae5017c5f8c
SHA1 fd698b58a563816b2260bbc50d7f864b33523121
SHA512 13f284821324ffaeadafd3651f64d896186f47cf9a68735642cf37b37de777dba197067fbccd3a7411b5dc7976e510439253bd24c9be1d36c0a59d924c17ae8e
SSDEEP 384:2lqVibvTh4qnFP+OPEzinclP++vDGFtart8E9VFK4iBSaXrwz1k:EqVavVfPkzhlmIDGFo+EAzrn
TLSH
T13CD28EA657D0467BE9731D3131E56A125F7AB9311E7184BF0A37C6842AA0B83BD7C30B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

UserInfo.dll

Path C:\Users\Admin\AppData\Local\Temp\nsm6E51.tmp\UserInfo.dll
Size 14KB
SHA256 c6c413108539f141bea3f679e0e2ef705898c51ec7c2607f478a865fc5e2e2df
MD5 610ad03dec634768cd91c7ed79672d67
SHA1 dc8099d476e2b324c09db95059ec5fd3febe1e1e
SHA512 18c3c92be81aadfa73884fe3bdf1fce96ccfbd35057600ef52788a871de293b64f677351ba2885c6e9ce5c3890c22471c92832ffc13ba544e9d0b347c5d33bfd
SSDEEP 192:PmTH+kPMC7x0KDWpHFtH6cAAANa3Gy2sE9jBFKWJfsHRGz6ot87n5/:PWH+SvDGFtart8E9VFK4iczNwn5
TLSH
T169622BBBC6606C12DC668E7670E49D2B7A71B7916F9080E7132AC15047C1783BAFD1ED
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

WebBrowser.dll

Path C:\Users\Admin\AppData\Local\Temp\nsm6E51.tmp\WebBrowser.dll
Size 103KB
SHA256 281a0dc8b4f644334c2283897963b20df88fa9fd32acca98ed2856b23318e6ec
MD5 b53cd4ad8562a11f3f7c7890a09df27a
SHA1 db66b94670d47c7ee436c2a5481110ed4f013a48
SHA512 bb45d93ed13df24a2056040c219cdf36ee44c8cddb7e178fdaabcec63ac965e07f679ca1fa42591bba571992af619aa1dc76e819a7901709df79598a2b0cef81
SSDEEP 3072:XfSOjAHW06ovW1UOBnuW/0L8ieV1QWZxs1VIdfyb:KOz3U6uW/ns1VIdY
TLSH
T15BA37C40B5D1C871EABE49381460DA715F3F7910DEA08DAB3768567D8F703C29E28A6F
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

bgstub.jpg

Path C:\Users\Admin\AppData\Local\Temp\nsm6E51.tmp\bgstub.jpg
Size 194KB
SHA256 5992f5deb915c3d80a1b514fac24a5031e888538dd53434137b40e453c794249
MD5 c22a1c6c2467b793dbe4b7c8542a63ef
SHA1 5a0d5dfaca6de8d9cbf8ef08dec4851e2405efec
SHA512 5eb9f2c5c6125091b35bafe525505a219c5b3834dc732e97538e243d48a64820f1b9ee0297686b52a51a2678fc4594227312ef2f5cf34c7fc11df80e6064df17
SSDEEP 6144:KeH1obw6iJwm12UelZ4nw8udaPn0dGadzPaLUE:KeVKw6kcUelxbdUnhasLD
TLSH
T16A14F177FBCBE7A94B0B842C517E7E375B6106E420C9669B40072E69E274FB4518B0BC
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

profile_cleanup.html

Path C:\Users\Admin\AppData\Local\Temp\nsm6E51.tmp\profile_cleanup.html
Size 1021B
SHA256 841c48b6725f700e10f2ee93bfe2824d630118eb98a61673485acf4e2e75587c
MD5 4c745bd2b758a55eb7730f7d13d74e40
SHA1 9c7109537960244a76220b6c3c292d0a2b79fd09
SHA512 525af6e2e7fe1b8160f0824f2eaf0f34a65e2dd106acbfcc8a43ddce4d438b32dd9b2bff654f3154101488b2ffec43598a0ef826cdbeb7fa5678e46cd4ae3ea9
TLSH
T11D11104A4CF84921A2505D207ED3B409CD446E53278A5C24B4AC00F81FDFE58D7EF6E9
MD5 SHA1 SHA512 TLSH

Submit Download

profile_cleanup.js

Path C:\Users\Admin\AppData\Local\Temp\nsm6E51.tmp\profile_cleanup.js
Size 1KB
SHA256 a58e277ede06cc98d00e34c9f9ae57908c49bd45f9f5ff99a395ae6f4c7be6a7
MD5 36148f33a1d0ff8e941ff4c453f3c138
SHA1 c1e4b8a7a9e0d8e757488113e68a7ff2c8fa7aba
SHA512 6d9b5b5b28ed5bbd7faca7773576e908148d409bb354528b373d81da8163c8d6487c8ab3e48c5c146c97a3cc2a2868304fcddd252ec773b58ba64245110853ab
TLSH
T1DD11EE7F38C6093009FB7AA4335B2255A4240012385AE8148DA882551CFAD22C26F7DB
MD5 SHA1 SHA512 TLSH

Submit Download

profile_cleanup_page.css

Path C:\Users\Admin\AppData\Local\Temp\nsm6E51.tmp\profile_cleanup_page.css
Size 606B
SHA256 1579a832e7e24e1afb415db6f5a42b6dbfddcab01aae077eee5e1083dced46bf
MD5 7028d17032e0974576db2454a1782108
SHA1 0fafe58be1359f85829f92d146b306fc302b8bff
SHA512 920dd47671fe97a0331943af879a191fd786abbdb5542c456e0f49c7be710c772239d51f893ccaa7754d998790c501d0d3903f0bf97697b78cf5fd65c9ad765e
TLSH
T1C9F002872880181135617D08FA13FF21F84909A331CED97174E0D06CC5DA5E1A763B4D
MD5 SHA1 SHA512 TLSH

Submit Download

stub_common.css

Path C:\Users\Admin\AppData\Local\Temp\nsm6E51.tmp\stub_common.css
Size 678B
SHA256 d86446129e0c9aee0288a4c9f465bb7c7593f81866110f6393673bce06d67eaf
MD5 8d627f759243e99a864f96e29496f436
SHA1 e2bce4c9378f4a24c8ffadc91ffb60c52d77c3e6
SHA512 76345c31c40807f20d08ffffd0a651a0a9cd673e1ffe4ca6b71ed8aee5b12b65a916db5e7fc8b3a4c74f4c8db1d03713cfc5a39f8d233496abfc0a1676e94ccb
TLSH
T18E01FE166796670CB089CEB677B39B14F31F04B0676A8A64E5F834A18F8F00580B3BE5
MD5 SHA1 SHA512 TLSH

Submit Download

stub_common.js

Path C:\Users\Admin\AppData\Local\Temp\nsm6E51.tmp\stub_common.js
Size 584B
SHA256 7da3182de713cdbfa901bf71ecbc517a3ff9dd53dfdf9b03ab01a19a899818d5
MD5 59cf6be7a5c5073a478a65966fcab782
SHA1 438494db51fd8a89a9135c2e0b753d8c396c04e5
SHA512 7e5be15fcee394f4d6e938fc87595bbfc896d9dd9e46447f983e03fbf8081e14d7382c81e57930e774e86ae5d7273c04f319b88098cfa820bb6f5b9107b686c8
TLSH
T1FDF0E13E38C4133D40677BA0266F5643F226514231C68E9AE5BC51E2B986C369533FED
MD5 SHA1 SHA512 TLSH

Submit Download

memory/4744-0-0x0000000000400000-0x0000000000446000-memory.dmp

Download

memory/4744-87-0x0000000000400000-0x0000000000446000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads